package day04;
import java.util.Scanner;
public class 拓展练习 {
    /*
    //1.接收用户输入的一个整数num，判断它的正负零值，正数则输出"+"，负数则输出"-"，0则输出"0"
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        System.out.println("请输入一个整数");
        int num = scan.nextInt();

        if(num>0){
            System.out.println("+");
        }else if(num<0){
            System.out.println("-");
        }else{
            System.out.println("0");
        }
     */

    public static void main(String[] args) {
        //接收用户输入的年份year和月份month，计算该年该月的天数，并输出
        Scanner scan = new Scanner(System.in);
        System.out.println("请输入年份");
        int year = scan.nextInt();
        System.out.println("请输入月份");
        int month = scan.nextInt();
        int days = 0;
        switch (month) {
            case 1:
            case 3:
            case 5:
            case 7:
            case 8:
            case 10:
            case 12:
                days = 31;
                break;
            case 4:
            case 6:
            case 9:
            case 11:
                days = 30;
                break;
            case 2:
                if ((year % 4 == 0 && year % 100 != 0) || year % 400 == 0) {
                    days = 29;
                } else {
                    days = 28;
                }
                System.out.println(year + "年的" + month + "月共" + days + "天");


        }


    }
}

